I did some consulting for a dot-com company on Wall Street back in 2000. I usually stayed uptown, so every day I'd take the subway to the WTC, and then walk past Trinity Church -- dodging the rats -- over to Wall Street. This is my first time back since then.
The Millenium Hilton looks as good as new, and most things around Ground Zero have been restored, but the blank spot -- with a viewing area -- is huge. Oddly, almost my first thought was that the viewing area was where the Krispy Kreme franchise used to be. I never heard mention of Krispy Kreme in all the news about the WTC, but it's definitely not there.
I met my wife there. We both worked in the WTC for 7 years.